Improvement in gang-plows



2 SheetsSheet 1.

L. CHAPMAN.

GANG-PLOW.

Patented Dec.19, 1876.

2 Sheets-Sheet 2.

L. CHAPMAN.

GANG-PLOW. No.185,493. Patented Dec. 19, 1876.

THE RAPHIC C0.N.Y.

' being bolted thereto.

.end of thepole d is pivoted or hung between UNITED, STATES PATENTOFFICE.

LUKE CHAPMAN, OF COLLIN SVILLE, CONNECTICUT, ASSIGNOR OF ONE-HALF OF HISRIGHT TO THE COLLINS COMPANY, OF SAME PLACE.

IMPROVEMENT IN GANG-PLOWS.

Specification forming part of Letters Patent No. 185,493, dated December19, 1876; application filed April 14, 1875.

To all whom it may concern:

Be. it known that I, LUKE CHAPMAN, of Collinsville, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements pertaining to Gang-Flows, of which the following is a specification, reference being had to the accompanying drawings, where-Figure 1 is a perspective view of a gangplow embodying my saidimprovements. Fig. 2 is a side elevation of the same machine from theland-side. Fig. 3 is a detail view of the clamp overhanging theland-wheel.

The main features of this gang-plow have been secured to me by other andprior Letters Patent but experience has shown me that for some purposesit is desirable to modify or change some of the features of the machineas originally constructed, and these changes form the subject-matter ofthese present Letters Patent.

'The various features of this present invention will be particularlypointed out and specified in the claims at the end of thisspecification.

The letters a and 1) denote the sides of the frame, of angle-iron, and ca bar of angle-iron which joins the two side bars a b at the rear, Thebroadened rear the front ends of the two side bars a b.

By using angle-iron for the frame of my gang-plow I get a frame of greatstrength and cheapness and of little weight.

The main shaft 0 is hung in the journalboxes ff, which are held to theangle-iron frame by the U-bolts 9, bearing nuts on their ends. Thecentral part of this shaft is of larger diameter than the ends, therebyforming shoulders which abut against the inner sides. of thejournal-boxes. Upon the two ends of the main shaft are the two similarrigid arms h and 71. To the arm 11. the landwheel 70 is hung upon thespur-arm 0. The

arm h extends above the main shaft forming the arm W, to the upper endof which is pivoted the hand-lever 5, its lower end broadened andbearing therein the slot or mortise 3 which has a limited play on thepin 47, which projects from the outer side of the arm k By throwing thelever i, and consequently the arm 72?, backward, as represented in thedrawings, the main shaft is lowered, relatively to the twowheels, and bybringing this handlever forward the main shaft, the frame, and,consequently the plows, are raised. The play which the lever i has uponthe arm h is for the purpose of operating the clamp m, which is hung onthe arm m, which projects from the hand-lever. This clamp overhangs theface of the land-wheel, and when the operator commences to bring thelever 5 forward the play of the lever 5 upon the arm it permits it tothrow the clamp down upon the wheel, and its two sides beingwedge-shaped it takes hold of the edges of the rim of the wheel withsuch tenacity as to bring the lever 73 and arm k forward, and thus raisethe plows with great ease to the operator, the land-wheel, in itsforward rotation, doing almost the whole of the work.

The furrow-wheel n is not hung directly to the end of the arm h, but tothe spur-arm n upon the end of the secondary arm 12, which is jointed tothe end of the primary arm h in such fashion as to permit the arm 19 tomake about a quarter rotation on the joint, the position of the arm 19in the drawings representing the limit of this rotation in one, and thata backward, direction. From this position the arm 10 can make about aquarter rotation toward the front of the machine. The lever s is rigidupon and with the arm 19, and is jointed at the top to theconnecting-rod t, the rear end of which is jointed to the frame of themachine. This arrangement of the parts holds the furrow-wheel a lowerthan the land-wheel 70 by aboutthe length of the secondary arm 12, whichis about the depth of the furrow. When the hand-lever z is in theposition of adjustment represented in the drawings the plows are inadjustment for actual plowing. By throwing the hand-lever forward theplows are raised out of the earth. When thus raised out of the earth theseat of the machine does not stand up entirely perpendicular, but doesnot depart enough therefrom to inconvenience the rider for shortdistances about the farm. If, however, the machine is to be drawn forany considerable distance the lever s can be disconnected from theconnecting-rod t, and the arm 1) allowed to rotate its quarter of a turnbackward, thus bringing the two wheels on the same level, and making theseat to stand perpendicular.

This connection of the arm 8 to the frame of the machine by means of therod t forms a feature of my present invention.

On the shaft 0 is rigidly attached the partidisk u, having variousindex-holes, u, into which fit pins 1;, which can be set into differentholes, so as to define and limit the rotary play of the main shaft 0,these pins striking against the side bar a of the frame.

This perforated disk, with the pins 2;, in combination with the side bara, forms a feature of my present invention.

From side bar a to side bar b runs the crosspiece w. Against and on thetop of this crosspiece bears the seat-standard as, through the foot ofwhich runs and rotates the shaft 0, and to the top of which is fixed theseat :0, being further held in position by the brace 40 running to thecross-piece 00 This arrangement for supporting the seat forms anotherfeature of my invention.

I claim as my improvements and as my invention- 1. The main shaftefcentmn enlarged shouldered, as described,combiued with th I plow-framethrough theimediuin of the par nal-boxes ff and the'U-bolts g,substantially in the manner audforthe purpose set fOIlihJfl 2. Thewedgingbrake or clamp m, in com-L bination with the jointed leverwl, thearms or" levers h k axle e, and wheel 75, substantially" as and for thepurpose described. 4

3. The combination of the arms 12 and h l, the lever s, the rod t, andthe frame of their .1 machine, substantially in the manner and for thepurpose set'forth;

4. The combination'of the arm h, the shaft e, the perforated disk to,pins 4;, and side bar a, substantially in the manner and for the Apurpose set forth. i t.

brace m arranged as shownywhereby the ing, substantially as specified.

said standard and axle are mutually support; l 13 I LUKE GHAPMANJ'Witnesses: I i OLIVER RPERBY, ALBERT L. THAYEB.

